Modeling and Simulation of Dissemination of Cultivated Land Protection Policies in China

Cultivated land protection is the top priority of national economy in China and livelihood people. policies (CLPP) play an important role cultivated land. However, process dissemination CLPP on social networks farmers has problems, such as distortion policy content, single channels, low level farmers’ knowledge, efficiency. For revealing characteristics (FSN), this study combines Suspected–Exposed–Infected–Recovered–Suspected (SEIRS) epidemic model to construct a suitable for FSN. In addition, numerical simulation conducted FSN, influence structural FSN different parameters analyzed. Results show that (1) rate between significant impact scale speed CLPP. A greater initial corresponds faster larger dissemination. (2) node degree means stronger ability Therefore, identifying holes (opinion leaders) can effectively promote (3) The SEIRS dynamically describe evolution law over time through four states farmer nodes suspected, exposed, infected, recovered. Numerical results immune degradation proportional direct immunization inversely proportional. increase reduce number recovered improve efficiency On basis abovementioned conclusions, draws recommendations China.